Back, and about to write some Doomhammer scenarios. Warhammer is a powerful multiverse and the Chaos Gods would be a hurdle, but the way the Doom Slayer works, he would THRIVE in Warhammer. The Doom Slayer absorbs the total strength of all he's killed ,post doom 64 once he gets his Dark Ages armor, which is upgraded into the 2016 set by the museum he's basically in, and into the Eternal set by himself [he has an engineering degree and is a canonical tech boi, probs built his own gaming PC, too] He thus is already Multiversal at the utmost minimum since Davoth, the creator of litteraly everything, is on Doom Slayer's kill feed. A single Space Marine would boost his power, and he could definitely take up to at least 100 regular space Marines at this point. The Chaos Gods couldn't corrupt him, he's described as entirely incorruptible post Dark Ages and Million Year Slaughter. He's older than the total lifespan of the Imperium of Man because of that same Million Year Slaughter, and once he kills a Psyker who wouldn't be able to harm his mind, he'd then be able to turn the warp into his b--ch. Next up is EON Jorge Joestar Ultimate Kars.